feat(PreconfiguredToolImprovements): update the tool definitions

[akshaylive]

Specifically,

1. Adding mockable support to all tools
2. Adding the right annotations to the tool definitions
3. Ensuring folder paths are removed to enable support for overrides

Development Package

• Add this package as a dependency in your pyproject.toml:

[project]
dependencies = [
  # Exact version:
  "uipath-langchain==0.0.146.dev1002140878",

  # Any version from PR
  "uipath-langchain>=0.0.146.dev1002140000,<0.0.146.dev1002150000"
]

[[tool.uv.index]]
name = "testpypi"
url = "https://test.pypi.org/simple/"
publish-url = "https://test.pypi.org/legacy/"
explicit = true

[tool.uv.sources]
uipath-langchain = { index = "testpypi" }